Chaos-based image encryption algorithm

In this Letter, a new image encryption scheme is presented, in which shuffling the positions and changing the grey values of image pixels are combined to confuse the relationship between the cipher-image and the plain-image. Firstly, the Arnold cat map is used to shuffle the positions of the image p...

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Bibliographic Details
Published in:Physics letters. A Vol. 346; no. 1; pp. 153 - 157
Main Authors: Guan, Zhi-Hong, Huang, Fangjun, Guan, Wenjie
Format: Journal Article
Language:English
Published: Elsevier B.V 10.10.2005
Subjects:
Arnold map
Chaos
Chen's chaotic system
Image encryption
Chaos
Image encryption
Arnold map
Chen's chaotic system
ISSN:0375-9601, 1873-2429
Online Access:Get full text
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Summary:In this Letter, a new image encryption scheme is presented, in which shuffling the positions and changing the grey values of image pixels are combined to confuse the relationship between the cipher-image and the plain-image. Firstly, the Arnold cat map is used to shuffle the positions of the image pixels in the spatial-domain. Then the discrete output signal of the Chen's chaotic system is preprocessed to be suitable for the grayscale image encryption, and the shuffled image is encrypted by the preprocessed signal pixel by pixel. The experimental results demonstrate that the key space is large enough to resist the brute-force attack and the distribution of grey values of the encrypted image has a random-like behavior.
ISSN:0375-9601
1873-2429
DOI:10.1016/j.physleta.2005.08.006